Let's assume that a database table called Contacts contains all of the fields listed in the first column of the chart below. The chart also contains four other columns:
- Text, numbers, or both: Should the field accept data entry input in the form of text, numbers, or both?
- Field size: This is the number of spaces you think the field should have.
- Required entry: Should the field be required entry (the record cannot be added to the database without the information) or optional entry (a record can be added without entry in the field)?
- Allow duplicates: Should the database allow duplicate entries for the field (e.g., can several people in the database share the same zip code)?
Practice designing fields by filling out the following table:
|Text, numbers, or both?||Field size||Required entry?||Allow duplicates?|